| 1 | MDM | Mediterranean Aviation Company Ltd. d/b/a Medavia Ops | IATA: N5, Callsign: Medavia, | M | AVCODES |
| 2 | MDM | Medavia Company | | | ICAO1 |
| 3 | MDM | MDM-Lärmschutz Ges. f. Lärmschutz mbH | | DE | VKM |
| 4 | MDMB | MIDWEST MOVING & STORAGE INC | | | SCAC4 |
| 5 | MDMC | MARKO DE MEXICO S DE RL DE | | | SCAC4 |
| 6 | MDMD | MCDERM | | | SCAC4 |
| 7 | MDME | MARIA D - SPECIAL MARITIME ENTERPRI | | | SCAC4 |
| 8 | MDME | Metro de Medellín | | CO | TRAFFIC |
| 9 | MDMF | MDMF TRANSPORT INC | | | SCAC4 |
| 10 | MDMH | MID AMERICA FREIGHT HANDLERS LLC | | | SCAC4 |
| 11 | MDMI | M & D TERMINALS INC | | | SCAC4 |
| 12 | MDML | MODERN MOSAIC LTD | | | SCAC4 |
| 13 | MDML | Městská doprava Mariánské Lázně | City: Mariánské Lázně | CZ | TRAFFIC |
| 14 | MDMM | MODERN TIME ALUMINUM 2009 LTD | | | SCAC4 |
| 15 | MDMN | MALAHIDE DESIGN & MANUFACTURING INC | | | SCAC4 |
| 16 | MDMO | MACDONALD MOTOSPORTS | | | SCAC4 |
| 17 | MDMP | MIDMAR TRANSPORTATION | | | SCAC4 |
| 18 | MDMQ | MDM INDUSTRIES INC | | | SCAC4 |
| 19 | MDMR | MEDITERRANE | | | SCAC4 |
| 20 | MDMS | MODERN MOVING & STORAGE | | | SCAC4 |
| 21 | MDMT | MERIDIAN MANUFACTURING GROUP CANADA | | | SCAC4 |
| 22 | MDMU | MIDMAC CONTRACTING INTERNATIONAL CO | | | SCAC4 |
| 23 | MDMV | MERCHA | | | SCAC4 |
| 24 | MDMW | MEAL AND MORE INC | | | SCAC4 |
| 25 | MDMY | MR D'S MOVING COMPANY | | | SCAC4 |
